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Transformers
3 kVA Control Transformer, Single Phase, 440/460/480V to 120/24V
● 3kVA single-phase control transformer for AC 50/60Hz circuits rated 500V and below.
● Triple primary inputs: 440V, 460V, and 480V; broad compatibility with international industrial supply standards.
● Dual secondary outputs: 120V and 24V; serving both machine control and low-voltage indicator circuits simultaneously.
● Supports customizable input and output voltage configurations for various industrial control applications
● Full electrical isolation between primary and secondary sides for safe, stable power delivery.
$897.69
3 kVA Single Phase Isolation Transformer, 208V to 240V
● 3kVA isolation transformer, default 208V to 240V step-up; step-down and custom voltages available.
● Full galvanic isolation between primary and secondary sides.
● Flexible voltage selection: 110V / 120V / 208V / 220V / 230V / 240V configurable on both input and output.
● Natural air self-cooling; IP20 encapsulated enclosure for dust and impact protection.
$1,036.45
30 kVA Three Phase Autotransformer, 415V to 220V/200V
● 30 kVA three-phase autotransformer for reliable industrial voltage conversion.
● Standard configuration: 380V to 220V/200V, with multiple voltage options supported.
● 415V to 220V/200V step-down configuration, suitable for industrial power systems.
● Dry-type autotransformer design is safe and easy to maintain.
● 50/60 Hz AC frequency is compatible with global power networks.
● Copper or aluminum winding is selectable for flexible cost and performance options.
$3,152.31
40-0-40V Toroidal Transformer, 600VA/800VA
● 600VA/800VA single-phase toroidal transformer for audio, control, and power supply systems.
● 240V AC primary with 40-0-40V output; multiple input and secondary voltages are selectable or customizable.
● Copper winding, 90%–96% efficiency, low no-load loss, and stable 50/60Hz operation.
● DC 2500V dielectric strength, ≥500MΩ insulation resistance, natural air cooling, and a 12-month warranty.
$219.99
5kVA Split Phase Transformer, 110V/120V to 220V/240V
● 5kVA isolation transformer features single phase to split phase functionality, providing stable power to three-phase loads.
● Compact structure, strong anti-interference capabilities, and phase-splitting output to meet diverse voltage requirements.
● Offers isolation protection, reduces inrush current, and achieves an efficiency of ≥95%.
● Widely used in three-phase equipment in industrial applications, agricultural irrigation systems, and power optimization for new energy power generation.
$2,938.89
4 kVA Control Transformer, Single Phase, 440/460/480V to 120/24V
● 4000VA single-phase control transformer designed for industrial control and machine tool applications.
● Dual primary voltage 240V / 480V for compatibility with different industrial power systems.
● Step-down transformer with dual secondary outputs: 208V and 110V.
● Also supports multiple input and output voltage configurations for flexible control of power solutions.
● Suitable for AC 50/60Hz circuits with rated voltage up to 500V.
$1,054.17
4 kVA Single Phase Isolation Transformer, 220V to 110V
● 4 kVA single-phase isolation transformer, steps down 220V to 110V or steps up 110V to 220V; other voltages customizable.
● Supports a wide range of voltage configurations: 110V / 120V / 208V / 220V / 230V / 240V on both primary and secondary sides.
● Choice of enclosure type (IP20) or open type; aluminum or copper enameled wire winding available.
● Zero waveform distortion; complete galvanic isolation between primary and secondary circuits.
$1,135.24
45 kVA Three Phase Autotransformer, 230V to 400V/380V
● Three-phase dry-type autotransformer, 45 kVA rated capacity.
● Standard configuration: input 380V, output 220V/200V; voltage customization available.
● Supports both 50Hz and 60Hz AC power supply systems.
● High-performance copper or aluminum winding.
$4,724.92
50-0-50V Toroidal Transformer, 1000VA/1500VA/2000VA
● Available in 1000VA/1500VA/2000VA, with 120V AC input and 50Hz/60Hz operation for high-power applications.
● 2x50V secondary output with 83.33A each winding supports demanding industrial and audio systems.
● Copper winding and toroidal core ensure stable power delivery with 90%–96% efficiency.
● Custom voltage options such as 110V / 220V / 230V / 240V input and 12V to 2x50V output are available on request.
$388.99
8kVA Split Phase Transformer, 110V/120V to 220V/240V
● 8 kVA phase-splitting transformer, 120V to 240V, input voltage customizable.
● Single-phase to phase-splitting transformer, 50/60Hz selectable, copper/aluminum winding material.
● Insulation resistance ≥50 MΩ, with power isolation protection, providing stable power supply.
● Widely used in residential, commercial, industrial, and power systems for stable power supply and voltage regulation.
$3,765.98
10kVA Split Phase Transformer, 110V/120V to 220V/240V
● This 10 kVA split phase transformer converts input voltages 120V, to output voltage 120V/240V AC
● Single to split phase, IP20 enclosure protection, aluminum/copper wire can be optional
● The split phase transformer's insulation resistance is ≥50 MΩ, providing excellent electrical isolation and effectively preventing the spread of electrical faults.
● Widely used in power transmission and distribution, transportation, industry, and household electronic equipment
$4,523.98
240V to 120V Step Down Toroidal Transformer, 2500VA/3000VA
● 2500VA/3000VA single-phase toroidal transformer for reliable 240V to 120V AC step-down conversion.
● Multiple primary and secondary voltage options are available, with custom configurations supported.
● Copper windings provide 90%–96% efficiency, low no-load loss, and stable 50/60Hz operation.
● Features DC 2500V dielectric strength, ≥500MΩ insulation resistance, and CE, RoHS, ISO certifications.
$784.99
5 kVA Control Transformer, Single Phase, 380V to 230/120V
● 5kVA single-phase control transformer designed for industrial control and electrical equipment.
● Steps down 380V AC to 230V and 120V outputs for reliable control power supply.
● Dry-type air cooling transformer for stable and maintenance-friendly operation.
● H class insulation winding with enameled copper or aluminum wire options.
● Suitable for AC 50/60Hz industrial control circuits.
● Supports multiple input and output voltage configurations for different application needs.
$1,264.62
5 kVA Single Phase Isolation Transformer, 230V to 120V
● 5 kVA isolation transformer, default 230V to 120V step-down; step-up and custom voltages available.
● Compatible with AC 50Hz / 60Hz for global applications.
● Multi-voltage support: 110V / 120V / 208V / 220V / 230V / 240V configurable on both primary and secondary sides.
● Working efficiency up to 95%; enhanced dielectric strength and insulation resistance for higher safety.
● Dry-type natural air self-cooling; IP20 enclosure protection; aluminum or copper wire winding optional.
$1,436.54
75 kVA Three Phase Autotransformer, 380V to 190V/120V
● 75 kVA 3-phase autotransformer designed for industrial voltage conversion.
● Standard configuration: input 380V, output 220V/200V; other input/output voltages customizable.
● ≥98% high efficiency winding for minimal energy loss across the full load range.
● Compatible with 50/60 Hz AC power networks.
● Copper or aluminum winding is selectable for different application needs.
$6,599.92
100 kVA Three Phase Autotransformer, 220V to 380V/240V
● Dry-type 3-phase autotransformer, 100 kVA rated capacity.
● Standard configuration: input 380V, output 220V/200V; input and output voltage customization available.
● Copper or aluminum winding available for different efficiency requirements.
● Rated frequency 50/60 Hz, compatible with global AC power systems.
● Suitable for large-scale industrial, commercial, and specialty power supply applications.
$7,859.31
15kVA Split Phase Transformer, 110V/120V to 220V/240V
● 120V to 240V split phase transformer with 15kVA capacity, copper/aluminum winding material, can be used as an auxiliary three-phase power supply.
● Convert 120V to 120V/240V AC, input voltage customizable, 50/60Hz selectable.
● Single phase to split phase, insulation resistance ≥50 MΩ, electrical isolation protection
● Suitable for small machine tools such as lathes, milling machines, and drilling machines in the machinery manufacturing industry.
$5,538.69
220V to 110V Toroidal Transformer, 4000VA/5000VA
● Designed for 220V-to-110V single-phase applications, with 4000VA and 5000VA capacity options.
● Toroidal copper-wound construction supports stable power delivery and no-load loss below 7.15W.
● Selectable input/output voltages and optional 4-wire dual outputs suit different installation requirements.
● Natural air cooling, DC 2500V dielectric strength, CE, RoHS and ISO certification, plus a 12-month warranty.
$1,359.99
6 kVA Control Transformer, Single Phase, 220/440V to 120/48/12V
● 6000VA single-phase control transformer designed for industrial control and lighting circuits.
● Dual primary voltage 220V / 440V for flexible power supply connection.
● Three secondary outputs: 120V / 48V / 12V for multiple control and lighting applications.
● Full electrical isolation between primary and secondary windings.
● Suitable for AC 50/60Hz electrical systems with reliable operation.
● Customizable input/output voltages available to suit project-specific needs.
$1,366.92
8 kVA Single Phase Isolation Transformer, 120V
● 8 kVA single-phase isolation transformer, default 1:1 ratio (120V/120V); wide voltage range customizable on both sides.
● Shielded design for enhanced electrical safety.
● LCD with two-color indicators for real-time input/output voltage monitoring.
● Cold-rolled oriented silicon steel core for low core loss; 180℃ enameled wire for long service life.
● Dry-type structure with stable performance; compatible with AC 50Hz / 60Hz; four 360° universal casters for easy mobility.
$2,069.05
PowerHome offers transformers for fixed AC voltage conversion, electrical isolation, industrial control circuits and split-phase power distribution. Choose from autotransformers, isolation transformers, control transformers, split-phase transformers and toroidal transformers in a wide range of VA and kVA capacities. To find the right model, confirm your available supply voltage, required equipment voltage, phase, frequency, load current and whether galvanic isolation is required.
How to Choose a Transformer
To select the right transformer, confirm the available input voltage, required output voltage, phase, frequency, load current and whether electrical isolation is needed.
Choose a capacity higher than the total connected load. Motors, pumps, compressors and other inductive equipment may require additional capacity because of their starting current.
Transformer Type Comparison
| Transformer Type | Isolation | Best For | Key Benefit |
| Autotransformer | No | Step-up or step-down voltage conversion | Compact, efficient and cost-effective |
| Isolation Transformer | Yes | Voltage conversion and equipment protection | Galvanic isolation and noise reduction |
| Control Transformer | Yes | PLCs, relays and control panels | Stable low-voltage control power |
| Split Phase Transformer | Yes | Compatible 120/240V systems | Provides both 120V and 240V output |
| Toroidal Transformer | Yes | Audio, electronics and power supplies | Low noise, compact size and high efficiency |
How to Size a Transformer
Single phase: kVA = V × A ÷ 1000
Three phase: kVA = 1.732 × V × A ÷ 1000
Choose approximately 20%–25% extra capacity for continuous loads.
Important Transformer Limitations
- A transformer changes voltage, not frequency.
- It does not convert single-phase power into three-phase power.
- A standard transformer does not regulate unstable input voltage.
Min:
$89.00
Max:
$30,087.00
$89
$30087
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